cells

2. is found in all cells and separates the interior of the cell from the outside environment
3. plastid that contains chlorophyll
6. a stage in the cell cycle when the chromosomes line up in the middle
8. occurring in pairs and involved in the development of spindle fibers in cell division
10. one of two identical halves of a replicated chromosome
12. The interval between mitosis
13. a membrane-bound organelle that contains the cell's chromosomes
16. energy production
17. the cytoplasmic division of a cell at the end of mitosis
18. the fourth phase of mitosis
19. one of two identical halves of a replicated chromosome

1. the final phase of cell division
2. The process by which one cell physically divides into two cells
4. Also called deoxyribonucleic acid
5. division of the cytoplasm without spindle formation or appearance of chromosomes
7. the initial stage of mitosis
9. The building block of all living things
11. Makes proteins
14. Process of cell duplication
15. the material of which the chromosomes of organisms other than bacteria are composed